Hello Sean! > I agree with Jasmin here. I noticed the same errors in the daily build and it > is really caused by not using the correct functions. I just didn't have the > time to follow up on it. I started to fix also gpio-ir-tx.c, but stopped that because it was too late. So I simply deactivated the driver: https://www.mail-archive.com/linux-media@xxxxxxxxxxxxxxx/msg117607.html Maybe you can fix gpio-ir-tx.c also by using the right functions to access ktime_t, so that this driver would be available for older Kernels, too. But there was another problem beside the ktime_t accessors, which I didn't analyze (symbol missing). BR, Jasmin